Question

The label on a bottle of vinegar says that the vinegar is 4% acetic acid. What would be the molarity of the acetic acid in solution

Answer 1

Answer:

 

Density  =  Mass / Volume    .....     which means that  .....

 

Volume * Density  =  Mass

 

So....for the liquid in the bottle we have that

 

750 ml  *  1.006 g / ml     =   Mass         [  the "ml"  cancels ]

 

750 *  1.006 g  =  

 

754.5 g   ....   this is the mass ["weight "] of the liquid .....

 

And the acetic acid is 4%  of this

 

So........the  mass  ["weight"]  of the acetic acid  is 4% of this...so

 

.04 * 754.5  =

 

30.18 g

Explanation:

Answer 2

Answer:

Molarity =3.018 M

Explanation:

Density  =  Mass / Volume

which means that

Volume x Density  =  Mass

So....for the liquid in the bottle we have that

750 ml x 1.006 g / ml  = Mass

750 *  1.006 g  =  754.5 g  this is the mass of the liquid

And the acetic acid is 4%  of this value dissolved.

So, the  mass of the acetic acid will be

0.04 x 754.5  = 30.18 g

Molarity = (30.18 \1000) = 3.018 M